912
FXUS65 KBYZ 300002
AFDBYZ
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
602 PM MDT MON JUN 29 2026
KEY MESSAGES
- IMPACTS FROM HIGH ELEVATION MOUNTAIN SNOW END THIS EVENING.
- RETURN TO SEASONABLE TEMPERATURES BEGINNING TUESDAY.
- INCREASING THUNDERSTORM POTENTIAL WEDNESDAY THROUGH FRIDAY;
STRONG TO SEVERE STORMS POSSIBLE.
UPDATE
HAVE LET THE WINTER WEATHER ADVISORY FOR SNOW/WIND IMPACTS TO THE
BEARTOOTH HIGHWAY EXPIRE. LIGHT SNOW SHOWERS WILL CONTINUE FOR A
COUPLE MORE HOURS, MAINLY ON W-NW ASPECTS. FISHER CREEK SNOTEL AT
9100FT MEASURED 5" OF SNOW BETWEEN 7-11AM THIS MORNING, AN
IMPRESSIVE FEAT FOR THE END OF JUNE. NO DOUBT SNOW WAS HEAVIER
OVER THE HIGHER PEAKS OF THE CRAZY AND BEARTOOTH-ABSAROKA
MOUNTAINS. JKL
DISCUSSION
TODAY THROUGH SUNDAY...
AN UPPER LEVEL LOW CURRENTLY OVER CENTRAL MT CONTINUES TO BRING
PRECIPITATION TO WESTERN AND CENTRAL MT. THIS LOW IS PROJECTED TO
MOVE NORTHEAST THROUGH THE EVENING, BRINGING LOW TO MODERATE
PRECIPITATION CHANCES ACROSS SOUTH-CENTRAL MT THROUGH THE
AFTERNOON AND EARLY EVENING. ISOLATED SHOWERS AND THUNDERSTORMS
ARE POSSIBLE EARLY AFTERNOON ACROSS EAST CENTRAL MT AS LOW CAPE
VALUES EXIST THERE. ADDITIONALLY, WITH THE LOW OVERHEAD AND
EXITING NORTHEAST, GUSTY WESTERLY WINDS 30-40 MPH WILL TRACK INTO
EASTERN MT THROUGH THE OVERNIGHT HOURS. AS THE LOW EXITS THE
REGION, HEIGHTS WILL BEGIN TO RISE, INCREASING SNOW LEVELS. THIS
WILL ALLOW FOR SNOW TO TRANSITION TO RAIN AS PRECIPITATION TAPERS
OFF THIS EVENING. INTO TUESDAY, TEMPERATURES WILL BEGIN TO REBOUND
TO THE 70S AND LOW 80S WITH ONLY ISOLATED SHOWERS EXPECTED OVER
THE HIGHER TERRAIN. WEDNESDAY THROUGH FRIDAY WILL BRING ABOUT
MULTIPLE SHORTWAVE DISTURBANCES, ALLOWING FOR DAILY CHANCES OF
AFTERNOON SHOWERS AND THUNDERSTORMS. NONE OF THESE DAYS SHOW
PARTICULARLY STRONG FORCING, BUT WILL BE SOMETHING TO KEEP AN EYE
ON FOR STRONG TO SEVERE THUNDERSTORM POTENTIAL. INTO THE WEEKEND,
ENSEMBLES ARE IN GOOD AGREEMENT FOR RIDGING TO TAKE PLACE,
ALLOWING FOR MILD AND WARM CONDITIONS. TEMPERATURES WILL REMAIN
CONSISTENT THROUGH THE WEEKEND, GENERALLY IN THE 70S AND 80S. TS
AVIATION
ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DECREASE THIS
EVENING, LINGERING LONGEST OVER THE MOUNTAINS. EXPECT MOUNTAIN
OBSCURATION INTO EARLY TUESDAY MORNING. ISOLATED SHOWERS AND
THUNDERSTORMS RETURN TO THE MOUNTAINS AND FOOTHILLS TUESDAY
AFTERNOON. BREEZY WNW WINDS OF 20 TO 40 KTS WILL GRADUALLY
DECREASE INTO TUESDAY AFTERNOON. ARCHER
PRELIMINARY POINT TEMP/POPS
TUE WED THU FRI SAT SUN MON
-----------------------------------------------------------
BIL 054/078 053/082 054/084 057/083 055/082 057/088 061/091
10/U 11/U 41/U 23/T 41/U 00/U 01/U
LVM 044/072 045/076 045/078 048/078 046/080 049/086 053/088
52/T 16/T 63/T 27/T 61/U 00/U 01/U
HDN 053/080 052/084 053/086 055/086 054/083 055/089 059/092
10/U 11/U 21/U 13/T 51/U 00/U 00/U
MLS 052/079 053/084 057/087 058/087 057/082 056/088 060/092
10/N 11/U 11/B 24/T 42/T 10/U 10/U
4BQ 053/079 054/083 056/087 058/088 057/081 056/087 061/092
00/U 22/T 12/T 24/T 43/T 11/U 11/U
BHK 048/077 051/082 054/086 055/087 055/080 052/085 056/089
10/N 02/T 13/T 25/T 63/T 11/U 11/U
SHR 045/076 048/081 051/084 052/084 051/080 050/087 055/090
11/U 22/T 12/T 13/T 43/T 11/U 01/U
BYZ WATCHES/WARNINGS/ADVISORIES
MT...NONE.
WY...NONE.
WEATHER.GOV/BILLINGS
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